. >> hassam rouhani has been welcomed in turkey. major contracts to sell iraniangas'sgas and nuclear technology are among the issues being discuss in ankara. let's go back to our top story in pakistan and the taliban attack on karachi's airport. joining us from islamabad, thank you for joining us on the show. the karachi international airport is a busy airport. it's a major transportation hub. the question needs to be asked: how did they are gunmen -- how were they able to breach such tight security? >> i think that's an ongoing problem, an ongoing issue which is you have had this rehmingon, karach. before that, a naval base, air base attack. before that, tlven other attacks on hard targets. the thing is such attacks do not happen until there is this penetration of terrorists and extremist in the security establishment and the largest execute establishment which includes law enforcement and military. unfortunately because we have absolutely no accountability of law enforcement and larger security establishment, therefore, we never f